I'll take a wild guess. The mosquitoes are from a marsh from just outside the Newark International Airport. A bunch of them flew into the airport. Started going after one of the package handlers for FedEx. He ran onto a plane sending deliveries to Sydney. The mosquitoes followed him in. The plane took off. After the long flight, the plane lands in Sydney. The package handlers load the packages onto some trucks (including the package the mosquitoes were sleeping in). The truck drives into the town where ozoneocean lives. The driver opens the door and the mosquitoes fly out and eventually find their way into ozone's home.